/* ============================================================
   Convertburda — shared design tokens & components
   All colors live here as CSS variables (rule 2). No hex outside :root.
   ============================================================ */
:root {
  --bg: #eef1f5;
  --paper: #ffffff;
  /* header matches the logo's own background so the JPG blends in seamlessly */
  --header-bg: rgba(255, 255, 255, .92);
  --ink: #111820;
  --muted: #5b6673;
  --line: #dbe1e9;
  --accent: #d98a1f;
  --accent-ink: #5a3808;
  --accent2: #2f7dd9;
  --accent2-ink: #123a63;
  --accent3: #1f9e7c;
  --accent3-ink: #0f5c46;
  --grid-line: #e3e8ef;
  --ad-bg: #eff3f8;
  --ad-line: #c9d3df;
  --ok: #2f7d4f;
  --danger: #a3341f;
  --shadow-sm: rgba(17, 24, 32, .05);
  --shadow-lg: rgba(17, 24, 32, .28);
  /* the logo is a white-background JPG; it keeps its own white badge in dark mode */
  --logo-bg: #ffffff;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --ui: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Dark theme (Fikret's light/dark toggle, 2026-07-10) — same accents, inverted surfaces */
:root[data-theme="dark"] {
  --bg: #10141a;
  --paper: #1a212b;
  --header-bg: rgba(21, 27, 35, .92);
  --ink: #e7ecf3;
  --muted: #9aa6b5;
  --line: #2d3745;
  --accent: #e39b33;
  --accent-ink: #f0c896;
  --accent2: #4f97e8;
  --accent2-ink: #a8cdf5;
  --accent3: #4dcda8;
  --accent3-ink: #a8f0da;
  --grid-line: #202834;
  --ad-bg: #171d26;
  --ad-line: #313d4c;
  --ok: #58b183;
  --danger: #e06a52;
  --shadow-sm: rgba(0, 0, 0, .25);
  --shadow-lg: rgba(0, 0, 0, .55);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--ui);
  color: var(--ink);
  background:
    radial-gradient(1100px 520px at 15% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent),
    radial-gradient(900px 460px at 100% 0%, color-mix(in srgb, var(--accent2) 8%, transparent), transparent),
    var(--bg);
  background-attachment: fixed;
  position: relative;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
/* grid overlay removed (Fikret 2026-07-10): clean color wash only */
a { color: var(--accent-ink); }
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ---- header ---- */
header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--header-bg);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
header::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.bar { max-width: 1180px; margin: 0 auto; display: flex; align-items: center; gap: 18px; padding: 12px 18px; }
.logo { font-weight: 800; letter-spacing: -.02em; font-size: 19px; display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); }
.logo img { height: 54px; width: auto; display: block; }
.logo .mark { width: 22px; height: 22px; border: 2px solid var(--ink); border-radius: 5px; position: relative; flex: none; }
.logo .mark::after { content: ""; position: absolute; inset: 4px 4px auto auto; width: 6px; height: 6px; background: var(--accent); border-radius: 1px; }
.spacer { flex: 1; }
.ghost { background: none; border: 1px solid var(--line); color: var(--ink); padding: 8px 13px; border-radius: 8px; font: inherit; font-size: 14px; cursor: pointer; text-decoration: none; display: inline-block; }
.ghost:hover { border-color: var(--muted); }
.ghost.active { border-color: var(--accent2); color: var(--accent2-ink); background: color-mix(in srgb, var(--accent2) 12%, transparent); }
.pro { border-color: var(--accent); color: var(--accent-ink); }
button:focus-visible, a:focus-visible, label:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- layout: fixed-ratio grid, never deforms on resize (rule 1) ---- */
.wrap {
  max-width: 1180px; margin: 0 auto; padding: 22px 18px 60px;
  display: grid; grid-template-columns: 160px minmax(0, 1fr) 160px; gap: 20px;
}
.rail { display: flex; flex-direction: column; gap: 16px; }
/* long pages (homepage): every rail slot stretches so the ad column lines the full scroll length */
.rail-fill .ad.tall { flex: 1 1 auto; }
main { min-width: 0; }

/* ---- ad slots ----
   Softened 2026-07-12: while AdSense approval is pending these render as empty
   placeholders — a loud dashed "ADVERTISEMENT" box reads as unfinished rather
   than ad-supported. Same sizes/positions (untouched), just quieter until real
   ads fill them in, at which point <ins class="adsbygoogle"> replaces this box
   entirely and none of this styling applies anymore. */
.ad {
  background: var(--ad-bg); border: 1px solid color-mix(in srgb, var(--ad-line) 55%, transparent); border-radius: 8px;
  color: color-mix(in srgb, var(--muted) 40%, var(--ad-bg)); font-size: 10px; letter-spacing: .08em; text-transform: uppercase;
  display: flex; align-items: center; justify-content: center; text-align: center;
}
.ad.tall { min-height: 600px; }
.ad.block { min-height: 110px; margin: 22px 0; }
.ad.lead { min-height: 90px; margin-bottom: 22px; }

/* ---- tool / content card (homogeneous container, rule 3) ---- */
.tool {
  position: relative;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px 22px;
  box-shadow: 0 1px 2px var(--shadow-sm), 0 14px 38px -18px var(--shadow-lg);
  overflow: hidden;
}
.tool::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.eyebrow {
  font-family: var(--mono); font-size: 12px; color: var(--accent-ink); letter-spacing: .04em;
  display: inline-flex; align-items: center; gap: 7px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  padding: 3px 10px; border-radius: 999px;
}
h1 { font-size: 26px; line-height: 1.15; letter-spacing: -.02em; margin: 6px 0 6px; }
.lede { color: var(--muted); margin: 0 0 18px; max-width: 60ch; }

.drop {
  border: 2px dashed var(--line); border-radius: 10px; padding: 30px 18px; text-align: center;
  background: color-mix(in srgb, var(--paper) 92%, var(--bg)); transition: border-color .15s, background .15s, box-shadow .15s; cursor: pointer;
  display: block;
}
.drop.drag { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--paper)); }
/* action zones light up in the primary accent so the eye goes straight to them */
.drop:hover, .drop:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.drop strong { display: block; font-size: 15px; }
.drop small { color: var(--muted); }
input[type=file] { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 14px 0; }
/* Fixed-size viewport (Fikret 2026-07-12): the box never grows/shrinks with the zoom
   level — the canvas zooms INSIDE it, centered while it fits, scrollable once it doesn't. */
#tCanvasWrap { width: 100%; height: 65vh; overflow: auto; border-radius: 8px; border: 1px solid var(--line); background: var(--paper); display: flex; }
#tCanvasWrap canvas {
  display: block; flex: none; margin: auto;
  cursor:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='21' height='21' viewBox='0 0 21 21'%3E%3Cg stroke='white' stroke-width='3' stroke-linecap='square'%3E%3Cline x1='10.5' y1='1' x2='10.5' y2='8'/%3E%3Cline x1='10.5' y1='13' x2='10.5' y2='20'/%3E%3Cline x1='1' y1='10.5' x2='8' y2='10.5'/%3E%3Cline x1='13' y1='10.5' x2='20' y2='10.5'/%3E%3C/g%3E%3Cg stroke='black' stroke-width='1' stroke-linecap='square'%3E%3Cline x1='10.5' y1='1' x2='10.5' y2='8'/%3E%3Cline x1='10.5' y1='13' x2='10.5' y2='20'/%3E%3Cline x1='1' y1='10.5' x2='8' y2='10.5'/%3E%3Cline x1='13' y1='10.5' x2='20' y2='10.5'/%3E%3C/g%3E%3Ccircle cx='10.5' cy='10.5' r='1' fill='red'/%3E%3C/svg%3E")
    10 10, crosshair;
}
#tCanvasWrap canvas.panning { cursor: grabbing; }

/* image-to-dxf threshold preview: same fixed-viewport zoom/pan pattern */
#vPreviewWrap { width: 100%; height: 55vh; overflow: auto; border-radius: 8px; border: 1px solid var(--line); background: var(--paper); display: flex; margin-top: 10px; }
#vPreviewWrap canvas { display: block; flex: none; margin: auto; }
#vPreviewWrap canvas.panning { cursor: grabbing; }

/* image-transparency: help popover */
.help-btn { width: 26px; height: 26px; padding: 0; margin-inline-start: 8px; border-radius: 50%; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; vertical-align: middle; }
.help-panel { margin: 10px 0 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px; background: color-mix(in srgb, var(--accent2) 6%, var(--paper)); }
.help-panel ul { margin: 8px 0 0; padding-inline-start: 20px; }
.help-panel li { margin: 4px 0; font-size: 14px; color: var(--ink); }

/* image-transparency: slider stepper +/- */
.stepper { display: inline-flex; align-items: center; gap: 6px; }
.stepper-btn { width: 26px; height: 26px; padding: 0; display: inline-flex; align-items: center; justify-content: center; font-size: 16px; line-height: 1; user-select: none; }

/* image-transparency: right-click context menu */
.context-menu {
  position: fixed; z-index: 60; min-width: 190px; padding: 6px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 1px 2px var(--shadow-sm), 0 14px 38px -14px var(--shadow-lg);
}
.context-menu button {
  display: block; width: 100%; text-align: start; background: none; border: none;
  padding: 8px 10px; border-radius: 6px; cursor: pointer; font: inherit; font-size: 14px; color: var(--ink);
}
.context-menu button:hover, .context-menu button:focus-visible { background: color-mix(in srgb, var(--accent2) 12%, transparent); }

.meta.warn { color: var(--accent-ink); }
.btn {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 100%, white 8%), var(--accent));
  color: #211404; border: none; padding: 10px 16px; border-radius: 8px; font: inherit; font-weight: 600;
  cursor: pointer; text-decoration: none; display: inline-block;
  box-shadow: 0 6px 14px -8px color-mix(in srgb, var(--accent) 70%, transparent);
  transition: transform .1s ease, box-shadow .1s ease, filter .1s ease;
}
.btn:hover { filter: brightness(1.04); transform: translateY(-1px); box-shadow: 0 8px 18px -8px color-mix(in srgb, var(--accent) 75%, transparent); }
.btn[disabled] { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
input[type=range] { font: inherit; }
/* Fikret's crypto-page input style promoted to the site-wide standard (2026-07-10):
   soft filled fields, rounded, with a colored focus glow */
select,
input[type=text],
input[type=number],
input[type=password],
textarea {
  appearance: none;
  -webkit-appearance: none;
  background: var(--bg); border: 1px solid transparent; border-radius: 10px;
  padding: 9px 13px; font: inherit; font-size: 15px; color: var(--ink); outline: none;
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
select:focus,
input[type=text]:focus,
input[type=number]:focus,
input[type=password]:focus {
  border-color: var(--accent2); background: var(--paper);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent2) 18%, transparent);
}
select {
  padding-right: 32px; cursor: pointer; font-weight: 500;
  /* arrow color = --muted; data-URIs can't read CSS variables, hence the literal */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%235b6673'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; background-size: 20px;
}
textarea {
  font-family: var(--mono); font-size: 13px; width: 100%; min-height: 160px; resize: vertical;
}
/* the big text areas light up in the PRIMARY accent (Fikret's focus rule) */
textarea:focus {
  border-color: var(--accent); background: var(--paper);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
label.fld { font-size: 14px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.unit-tag { color: var(--muted); font-size: 13px; font-weight: 400; }

/* code viewer */
.code { border: 1px solid var(--line); border-radius: 8px; overflow: auto; max-height: 420px; background: #0e141b; }
.code table { border-collapse: collapse; width: 100%; font-family: var(--mono); font-size: 13px; }
.code td { padding: 1px 10px; white-space: pre; vertical-align: top; }
.code td.ln { color: #5a6b7d; text-align: right; user-select: none; background: #0b1016; position: sticky; left: 0; width: 1%; }
.code td.src { color: #d6e2ee; }
.tok-g { color: #7fd1ff; }
.tok-m { color: #ffb86b; }
.tok-axis { color: #a6e3a1; }
.tok-fs { color: #f2c56b; }
.tok-n { color: #6a7d8f; }
.tok-com { color: #6a7d8f; font-style: italic; }
.tok-num { color: #e6edf3; }

/* light data table (results, reference values) */
.table-wrap { overflow-x: auto; margin-top: 12px; }
.table { border-collapse: collapse; width: 100%; font-size: 14px; }
.table td { padding: 7px 10px; border-bottom: 1px solid var(--line); }
.table tr:first-child td { border-top: 1px solid var(--line); }
.table td:last-child { text-align: right; font-family: var(--mono); }

.meta { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-top: 10px; }
.result-ok, .result-bad { border-radius: 8px; padding: 12px 14px; font-size: 14px; }
.result-ok { background: color-mix(in srgb, var(--ok) 12%, white); border: 1px solid var(--ok); color: var(--ok); }
.result-bad { background: color-mix(in srgb, var(--danger) 10%, white); border: 1px solid var(--danger); color: var(--danger); }
.preview { margin-top: 12px; border: 1px solid var(--line); border-radius: 8px; padding: 10px; background: #fbfcfe; text-align: center; }
.preview img { max-width: 100%; max-height: 320px; border-radius: 4px; }
/* checkerboard = the universal "this has transparency" indicator (Photoshop/GIMP convention) —
   without it, a transparent PNG previewed on this near-white box looks identical to an opaque
   white one, so a successful transparency removal looked like it had done nothing at all. */
.preview.checkerboard {
  background-color: var(--paper);
  background-image:
    linear-gradient(45deg, var(--line) 25%, transparent 25%),
    linear-gradient(-45deg, var(--line) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--line) 75%),
    linear-gradient(-45deg, transparent 75%, var(--line) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

/* explainer under the tool (SEO copy) — its own card, not transparent-on-grid */
.explain {
  margin-top: 22px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: 0 1px 2px var(--shadow-sm);
}
.explain h2 { font-size: 16px; margin: 0 0 8px; color: var(--ink); }
.explain h2:not(:first-child) { margin-top: 18px; }
.explain p { color: var(--muted); margin: 0 0 14px; max-width: 70ch; }
details { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin-bottom: 8px; background: color-mix(in srgb, var(--ad-bg) 60%, white); }
details:hover { border-color: var(--accent); }
summary { cursor: pointer; font-weight: 600; font-size: 14px; }
details p { margin: 8px 0 2px; }

/* ---- /pricing page ---- */
.coming-soon-banner {
  background: color-mix(in srgb, var(--accent2) 10%, var(--paper));
  border-color: color-mix(in srgb, var(--accent2) 35%, var(--line));
}
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 6px; }
.price-card {
  border: 1px solid var(--line); border-radius: 10px; padding: 16px; background: var(--paper);
  text-decoration: none; color: inherit; display: block; transition: border-color .15s, transform .15s;
}
a.price-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.price-card h3 { margin: 0 0 10px; font-size: 15px; }
.price-card .examples { color: var(--muted); font-size: 12.5px; margin: 8px 0 0; }
.price-card .big-price { display: block; font-size: 26px; margin: 4px 0; }
.price-card.featured-card { border-color: var(--accent); box-shadow: 0 6px 18px -10px color-mix(in srgb, var(--accent) 60%, transparent); }
.badge-free {
  display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: .03em; text-transform: uppercase;
  color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, transparent); border-radius: 6px; padding: 3px 8px; margin-bottom: 8px;
}
.badge-save {
  display: inline-block; font-size: 11px; font-weight: 600; color: var(--accent-ink);
  background: color-mix(in srgb, var(--accent) 18%, transparent); border-radius: 6px; padding: 2px 7px; margin-inline-end: 6px;
}
.price-card .durations { display: flex; gap: 8px; flex-wrap: wrap; }
.price-card .duration {
  flex: 1 1 0; min-width: 78px; text-align: center; border: 1px solid var(--line); border-radius: 8px; padding: 8px 6px;
}
.price-card .duration b { display: block; font-size: 16px; }
.price-card .duration span { display: block; font-size: 11px; color: var(--muted); }
.price-card .duration.featured { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.price-card .duration span.badge-save { display: inline-block; color: var(--accent-ink); }
.combo-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 6px; }
.combo-card { border: 1px solid var(--line); border-radius: 10px; padding: 14px; background: var(--paper); text-align: center; }
.combo-pair { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.combo-pair .plus { color: var(--accent-ink); font-weight: 700; margin: 0 4px; }
.combo-price s { color: var(--muted); font-size: 13px; margin-inline-end: 6px; }
.combo-price b { font-size: 19px; }
.combo-price span { color: var(--muted); font-size: 12px; }

/* ---- safety warning (machining calculators) ---- */
.safety-warning {
  display: flex; gap: 10px; align-items: flex-start; margin-top: 14px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  border-radius: 8px; padding: 12px 14px;
}
.safety-warning span { flex: none; font-size: 17px; line-height: 1.4; }
.safety-warning p { margin: 0; color: var(--ink); font-size: 13px; max-width: none; }

/* ---- catalog grid (used on home + "more tools" sections) ---- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.card {
  border: 1px solid var(--line); border-radius: 8px; padding: 12px 13px; background: var(--paper); cursor: pointer;
  text-align: left; font: inherit; text-decoration: none; color: inherit; display: block;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 18px -12px var(--shadow-lg); }
.card .t { font-weight: 600; font-size: 14px; }
.card .d { color: var(--muted); font-size: 12.5px; margin-top: 2px; }
.card .tag { display: inline-block; margin-top: 8px; font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: #93a0af; }
.card.soon { opacity: .72; cursor: default; }

/* ---- homepage hero + segments ---- */
/* richer than a plain card — reinforces "this is a product" on the very first thing seen */
.hero {
  position: relative; overflow: visible;
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent) 8%, var(--paper)), color-mix(in srgb, var(--accent2) 6%, var(--paper)) 75%);
}
.hero-deco { position: absolute; top: -14px; right: -10px; width: 130px; height: 130px; opacity: .9; pointer-events: none; }
.hero h1 { max-width: 24ch; }
.hero .lede { max-width: 56ch; }
.hero-logo { display: block; max-width: 380px; width: 100%; height: auto; margin: 0 auto 10px; background: var(--logo-bg); border-radius: 12px; }
.intro-video video { display: block; width: 100%; max-width: 720px; margin: 6px auto 0; border: 1px solid var(--line); border-radius: 8px; }
.intro-video h2 { font-size: 16px; margin: 2px 0 10px; text-align: center; }
.brand-card { text-align: center; }
.brand-card img { max-width: 420px; width: 100%; height: auto; background: var(--logo-bg); border-radius: 12px; }

.segments { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.segment { text-align: left; }
.segment h2 { font-size: 17px; margin: 4px 0 6px; }
.segment p { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.segment-icon {
  width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: var(--accent-ink); background: color-mix(in srgb, var(--accent) 16%, var(--paper));
}
.segment:nth-child(2) .segment-icon { color: var(--accent2-ink); background: color-mix(in srgb, var(--accent2) 16%, var(--paper)); }
.segment:nth-child(3) .segment-icon { color: var(--accent3-ink); background: color-mix(in srgb, var(--accent3) 16%, var(--paper)); }
.segment-icon svg { width: 21px; height: 21px; }
.segment-links { display: flex; flex-wrap: wrap; gap: 8px; }
.segment-links .ghost { font-size: 13px; padding: 6px 11px; }

@media (max-width: 900px) {
  .segments { grid-template-columns: 1fr; }
  .hero-deco { display: none; }
}

/* homepage tool tiles — "LIT" pass (2026-07-12): each category gets its own color
   identity (icon badge + tinted section + tinted, left-accented cards) so scrolling
   through the homepage reads as moving through a designed product's sections, not a
   flat directory listing. Colors are moderate/professional, not neon — same shadow
   and radius language as every other card on the site (rule 3 homogeneity), only the
   hue changes per category. */
.cat-audio        { --cat: #7c5cbf; --cat-ink: #4a3380; }
.cat-images       { --cat: var(--accent); --cat-ink: var(--accent-ink); }
.cat-pdf          { --cat: var(--accent2); --cat-ink: var(--accent2-ink); }
.cat-business     { --cat: #1f9e7c; --cat-ink: #0f5c46; }
.cat-cad          { --cat: #55708a; --cat-ink: #2e4155; }
.cat-dev          { --cat: #5a63c4; --cat-ink: #33397a; }
.cat-machining    { --cat: #a8672a; --cat-ink: #603a18; }
.cat-engineering  { --cat: #1f8fa3; --cat-ink: #0f4e59; }
:root[data-theme="dark"] .cat-audio       { --cat: #b09ee8; --cat-ink: #d8cff5; }
:root[data-theme="dark"] .cat-business    { --cat: #4dcda8; --cat-ink: #a8f0da; }
:root[data-theme="dark"] .cat-cad         { --cat: #9fb4c7; --cat-ink: #d3e0ea; }
:root[data-theme="dark"] .cat-dev         { --cat: #9ba3e8; --cat-ink: #d4d8f7; }
:root[data-theme="dark"] .cat-machining   { --cat: #d99b4f; --cat-ink: #f0cfa0; }
:root[data-theme="dark"] .cat-engineering { --cat: #5fc9dd; --cat-ink: #b8ecf5; }

.tile-group {
  background: color-mix(in srgb, var(--cat, var(--accent)) 5%, var(--paper));
  border-color: color-mix(in srgb, var(--cat, var(--accent)) 22%, var(--line));
}
.tile-group h2 {
  font-size: 18px; margin: 2px 0 14px; letter-spacing: -.01em;
  display: flex; align-items: center; gap: 12px;
}
.cat-icon {
  flex: none; width: 36px; height: 36px; border-radius: 10px; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--cat, var(--accent)) 20%, var(--paper));
}
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.tile {
  display: block; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  border-inline-start: 3px solid var(--cat, var(--accent));
  text-decoration: none; background: color-mix(in srgb, var(--cat, var(--accent)) 4%, var(--paper));
  transition: border-color .12s ease, transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.tile:hover {
  border-color: var(--cat, var(--accent)); transform: translateY(-2px);
  background: color-mix(in srgb, var(--cat, var(--accent)) 9%, var(--paper));
  box-shadow: 0 10px 22px -12px color-mix(in srgb, var(--cat, var(--accent)) 55%, transparent);
}
.tile strong { display: block; color: var(--cat-ink, var(--ink)); font-size: 14.5px; margin-bottom: 2px; }
.tile span { color: var(--muted); font-size: 12.5px; line-height: 1.35; display: block; }

/* Gallery vs Index view (Fikret 2026-07-12): the base .tile styles above ARE the compact
   "Index view" (his personal favorite); the data-view="gallery" overrides below give new
   visitors the spacious tile look with a pictogram per tool. The pre-paint script in
   _Layout defaults to gallery; the header toggle (homepage only) flips and remembers it. */
.tile .tile-icon { display: none; } /* .tile .tile-icon (0-2-0) so it outranks the generic `.tile span` block rule above */
:root[data-view="gallery"] .tiles { grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 16px; }
:root[data-view="gallery"] .tile {
  text-align: center; padding: 20px 16px 16px;
  border-inline-start: 1px solid var(--line);
  border-top: 3px solid var(--cat, var(--accent));
}
:root[data-view="gallery"] .tile-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; margin: 0 auto 10px; border-radius: 13px;
  color: var(--cat-ink, var(--accent-ink));
  background: color-mix(in srgb, var(--cat, var(--accent)) 15%, var(--paper));
}
:root[data-view="gallery"] .tile-icon svg { width: 27px; height: 27px; }
:root[data-view="gallery"] .tile strong { font-size: 15px; margin-bottom: 4px; }
:root[data-view="gallery"] .tile:hover .tile-icon {
  background: color-mix(in srgb, var(--cat, var(--accent)) 26%, var(--paper));
}

/* "quick cards" — Fikret's iPhone-style panel trial (crypto page first, 2026-07-10);
   his design, recolored onto our tokens (accent2 replaces iOS-blue, bg replaces iOS-grey) */
.top-controls { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 20px; align-items: stretch; }
.ios-card {
  background: var(--paper); border-radius: 16px; padding: 16px 20px;
  border: 1px solid var(--line);
  box-shadow: 0 4px 14px -6px color-mix(in srgb, var(--ink) 18%, transparent);
  display: flex; flex-direction: column; justify-content: center;
}
.ios-card h2, .ios-card .eyebrow-label {
  margin: 0 0 10px; font-size: 13px; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: .5px;
}
.converter-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
/* .ios-input/.ios-select need no own rules anymore — their style became the
   site-wide input/select standard (see the global rules above) */
.ios-equals { font-size: 20px; color: var(--muted); font-weight: 500; margin: 0 4px; }
.ios-label { font-size: 15px; font-weight: 600; color: var(--ink); }

/* related tools block on tool pages */
.related h2 { font-size: 15px; margin: 0 0 10px; }
.related-links { display: flex; flex-wrap: wrap; gap: 8px; }
.related-links .ghost { font-size: 13px; padding: 6px 11px; }
.related-links .ghost.pick {
  border-color: var(--accent); color: var(--accent-ink);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.pick-star { color: var(--accent-ink); margin-inline-end: 4px; }

/* site-wide footer sitemap */
.sitemap { border-top: 1px solid var(--line); background: var(--paper); }
.sitemap-in {
  max-width: 1180px; margin: 0 auto; padding: 22px 18px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px;
}
.sitemap-col h3 { font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 0 0 8px; }
.sitemap-col ul { list-style: none; margin: 0; padding: 0; }
.sitemap-col li { margin: 0 0 5px; }
.sitemap-col a { color: var(--ink); text-decoration: none; font-size: 13px; }
.sitemap-col a:hover { color: var(--accent-ink); text-decoration: underline; }

footer { max-width: 1180px; margin: 0 auto; padding: 26px 18px 50px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }
footer a { color: var(--muted); text-decoration: none; margin-inline-end: 14px; }
footer a:hover { color: var(--ink); }
footer button.linklike { background: none; border: none; padding: 0; margin-inline-end: 14px; color: var(--muted); font: inherit; cursor: pointer; text-decoration: none; }
footer button.linklike:hover { color: var(--ink); }

/* ---- modal (custom, never alert()/confirm() — rule 12; one at a time — rule 5) ---- */
.veil { position: fixed; inset: 0; background: rgba(17, 24, 32, .5); display: none; align-items: center; justify-content: center; z-index: 40; padding: 18px; }
.veil.open { display: flex; }
.modal { background: var(--paper); border-radius: 12px; max-width: 440px; width: 100%; padding: 24px; }
.modal h3 { margin: 0 0 6px; }
.modal p { color: var(--muted); font-size: 14px; }
.plans { display: flex; gap: 10px; margin: 16px 0 4px; }
.plan { flex: 1; border: 1px solid var(--line); border-radius: 9px; padding: 12px; text-align: center; }
.plan b { display: block; font-size: 20px; }
.plan span { font-size: 12px; color: var(--muted); }
.close { float: right; border: none; background: none; font-size: 20px; cursor: pointer; color: var(--muted); }

/* ---- welcome popup (same .veil/.modal family, sized up for its content) ----
   Distinct tinted background + stronger shadow/border than plain .modal — at this
   size it needs to read unmistakably as a floating overlay, not another page card. */
.modal-lg {
  max-width: 720px; max-height: calc(100vh - 60px); overflow-y: auto;
  /* warm accent tint, not blue — the page canvas itself already has a cool blue-ish
     wash (--bg + accent2 glow), so a blue-tinted popup nearly matched it and still
     read as "part of the page" instead of a distinct overlay. */
  background: linear-gradient(165deg, color-mix(in srgb, var(--accent) 16%, var(--paper)), var(--paper) 60%);
  border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--line));
  box-shadow: 0 28px 70px -18px var(--shadow-lg), 0 4px 14px var(--shadow-sm);
}
.modal-lg .eyebrow { margin: 0 0 8px; }
.modal-lg h3 { font-size: 22px; }
.welcome-risk {
  font-size: 13px; color: var(--muted); background: color-mix(in srgb, var(--accent) 8%, transparent);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin: 10px 0;
}
.welcome-features { display: flex; flex-direction: column; gap: 9px; margin: 16px 0; }
.welcome-features div { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink); }
.welcome-features span { flex: none; font-size: 17px; line-height: 1.4; }
.welcome-cats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 18px; margin: 18px 0 6px; }
.welcome-cat h4 { margin: 0 0 2px; font-size: 13.5px; position: relative; padding-inline-start: 14px; }
.welcome-cat h4::before {
  content: ""; position: absolute; inset-inline-start: 0; top: 3px; bottom: 3px; width: 4px;
  border-radius: 2px; background: linear-gradient(180deg, var(--accent), var(--accent2));
}
.welcome-cat p { margin: 0; font-size: 12.5px; color: var(--muted); padding-inline-start: 14px; }
.welcome-closing { margin: 16px 0 4px; font-size: 14px; color: var(--ink); }
.welcome-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
@media (max-width: 560px) { .welcome-cats { grid-template-columns: 1fr; } }

/* ---- cookie consent banner ---- */
.consent { position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; background: var(--paper); border-top: 1px solid var(--line); box-shadow: 0 -2px 12px var(--shadow-sm); }
.consent.hidden { display: none; }
.consent-in { max-width: 1180px; margin: 0 auto; padding: 16px 18px; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.consent-in p { margin: 0; color: var(--muted); font-size: 13.5px; flex: 1 1 320px; }
.consent-actions { display: flex; gap: 10px; flex: none; }

@media (max-width: 900px) {
  .wrap { grid-template-columns: 1fr; }
  .rail { flex-direction: row; }
  .ad.tall { min-height: 90px; flex: 1; }
  /* rails collapse to a single horizontal strip on mobile — one slot is enough there */
  .rail-fill .ad.tall:not(:first-child) { display: none; }
}

/* ---- language picker (flag button + Z-A menu, toggled in site.js) ---- */
.lang { position: relative; }
.lang-btn { display: inline-flex; align-items: center; padding: 8px 10px; }
.lang svg.flag { width: 20px; height: 14px; border-radius: 3px; box-shadow: 0 0 0 1px var(--line); display: block; flex: none; }
.lang-menu {
  position: absolute; inset-inline-end: 0; top: calc(100% + 8px); z-index: 60;
  margin: 0; padding: 6px; list-style: none; min-width: 178px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 1px 2px var(--shadow-sm), 0 14px 38px -14px var(--shadow-lg);
}
.lang-menu a { display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 7px; color: var(--ink); text-decoration: none; font-size: 14px; white-space: nowrap; }
.lang-menu a:hover { background: var(--bg); }
.lang-menu a[aria-current="true"] { background: var(--bg); font-weight: 600; }